I saw this on the WatPy mailing list and thought it might be appropriate, especially given David Lloyd Carr's presentation on Monday: http://watpy.ca/learn/2013/feb/learn-to-code/ - Paul -- "Robocalls: The Story So Far" - Wed Jan 16, 7pm, Duke of Wellington Pub, 33 Erb St W, Waterloo, http://www.fairvote.ca/en/WaterlooRegion